代码：
let actionsAlertController = UIAlertController(title: nil, message: nil, preferredStyle: UIAlertControllerStyle.Alert) let cancelAlertAction = UIAlertAction(title: "复制", style: UIAlertActionStyle.Default, handler: copyHandler) actionsAlertController.addAction(cancelAlertAction) let sureAlertAction = UIAlertAction(title: "搜藏", style: UIAlertActionStyle.Default, handler: addFavoriteHandler) actionsAlertController.addAction(sureAlertAction) self.presentViewController(actionsAlertController, animated: true, completion: nil) func copyHandler(alerAction:UIAlertAction){ print("copyHandler alerAction=\(alerAction)") } func addFavoriteHandler(alerAction:UIAlertAction){ print("addFavoriteHandler alerAction=\(alerAction)") /* PUT /user/{currentuser}/pins/{resourceId} 收藏资源 返回string(resurceId) */ let curResId:String = "" let addToFavoriteUrl:String = StrServerUrl + "/user/" + gCurUserItem.id + "/pins/" + curResId } |
想要给：copyHandler和addFavoriteHandler添加额外的参数。
swift handler add parameter
scenekit – completion handler with parameters (Swift) – Stack Overflow
ios – Completion Handler in Swift – Stack Overflow
Swift Function Currying | Xebia Blog
好像自己找到了：
然后：
结果不论是哪种：
favoriteAlertAction.setValue(curMessageTVC.message, forKey: : "curMessage") favoriteAlertAction.setValue(curMessageTVC.message, forUndefinedKey: "curMessage") |
都会出错：
Terminating app due to uncaught exception ‘NSUnknownKeyException’, reason: ‘[<UIAlertAction 0x7ff18dae81d0> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key curMessage.’ |
搜：
swift UIAlertAction add parameter
最后还是没有解决。
暂时用了，额外用全局变量，解决UIAlertAction的callback的handler中的参数传递。。。
代码如下：
let actionsAlertController = UIAlertController(title: nil, message: nil, preferredStyle: UIAlertControllerStyle.Alert) let cancelAlertAction = UIAlertAction(title: "复制", style: UIAlertActionStyle.Default, handler: copyActionHandler) actionsAlertController.addAction(cancelAlertAction) let favoriteAlertAction = UIAlertAction(title: "收藏", style: UIAlertActionStyle.Default, handler: addFavoriteActionHandler) actionsAlertController.addAction(favoriteAlertAction) self.presentViewController(actionsAlertController, animated: true, completion: nil) func addFavoriteActionHandler(alerAction:UIAlertAction){ print("addFavoriteActionHandler alerAction=\(alerAction)") /* PUT /user/{currentuser}/pins/{resourceId} 收藏资源 返回string(resurceId) */ if longPressedMessageTVC != nil { let curMessage:Message = longPressedMessageTVC!.message let curResId:String = curMessage.id print("curResId=\(curResId)") //message-813369d4-905b-40be-9f02-8e1641479f75 let addToFavoriteUrl:String = StrServerUrl + "/user/" + gCurUserItem.id + "/pins/" + curResId print("addToFavoriteUrl=\(addToFavoriteUrl)") //http://jiandao.im:8080/user/user-4045bf61-9075-4403-b614-0aaaa7d19418/pins/message-813369d4-905b-40be-9f02-8e1641479f75 let extraParas:[String:AnyObject] = [ "httpVerb" : String(HTTPVerb.PUT), "curResId" : curResId ] print("extraParas=\(extraParas)") getUrlRespJsonDict_async(addToFavoriteUrl, extraParas: extraParas, respJsonDictHandler: addToFavoriteHandler) } } |
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